I agree Phil that folks on this forum are very helpful and knowledgeable although some occasions i find i am misunderstood or at odds that i find confusing, perhaps because of my knowledge isnt as great or my meaning (choice of words) is just misinterpreted .
there is still one or two points that the folks here insist wernt an option i.e dual exhaust on non GT vehicles , even though i have found period ford (not cobra) advertisements saying it was. even Jeff i think it was, produced a period 65 parts doc that he pointed out (with yellow arrow) showed it wasn't according to his interpretation, however a few rows above it did show a dual exhaust kit (5210-A from memory) was available for standard 260 and 289 equipped cars and i found a bloke that still has NOS of those mufflers. so i find that confusing. perhaps my confusion comes because when someone asks a question in a thread e.g "was dual exhaust an option for C code or non GT's" , i read that as it it was, because i believe it could be ordered from the dealer and when car was picked up it was on. however it maybe that the folk here strictly mean if it was done at the factory (which i dont have any proof yet it never was not done). it may be it was dealer installed option and perhaps that goes against strict concourse rules which they are commenting on as a given (even though sometimes not mentioned specifically). but then arguably i have also read that in the early days Ford had trouble meeting production/sales demands and were sending cars out to dealers incomplete where they would often fit different parts themselves, even trunk lids i read once dealers were fitting themselves. pedantically one could argue if a dealer did anything and it doesnt count, then then those mustangs should be showed without trunk lids lol. since i dont (as yet) enter my car in concourse events even though perhaps i could or might like to in the future (though i am sure it wouldn't go close to winning, because it hasn't been restored and some rubbers are somewhat perished (still work but perishing) and some paint shows patina (read worn through!) where arm rests on door etc etc, one of the seats are split at the seam etc.
i guess what confuses me with concourse rules at the moment is whether ford accessaries are permitted, anything from day night mirrors, h/brake warning light etc, if they are? then are or why not Cobra parts as well that could be ordered at time of purchase or over the counter after. if not then i am sure there is a simple reason, perhaps a line has to be drawn somewhere.
i dont know Phil if you show your car in concourse events or are involved with a club but my small encounters so far with clubs down here i have found some to be very knowledgeable and helpful people. although i happened to be reading concourse rules (for the national body) or outlines the other day i noticed a curious rule . they say that for converted RHD mustangs the wipers 'must' be converted to RHD whereas i have found many many period 65 pictures and advertisements where no doubt Ford Australia did the conversion before they started contracting the work out to others (even those early contractors didnt usually change the wipers afaik as yet). and they more often than not, have left the wipers in the LHD configuration. so i find it weird they insist the wipers be converted to RHD to enter even though obviously that is something most States insist on now if converting today, it wasn't always the Law in the past.